Can't seem to progress well 😢

I'm currently playing to achieve goal 22. However, I just can't seem to make progress today 😢 First off, the 'Auto Flip' feature disappeared midway through. Even after watching ad videos to level up the auto flip in the bottom right, the situation hasn't improved. Furthermore, something called 'Coin Tier Up' newly appeared, so I watched an ad video as usual, but its effect only lasted for 1 minute 😩 I have to keep tapping for coins, and I have to keep watching ad videos, so I can't move forward at all 😭